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Of diodes and support Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on the footprint. Some options: Bourns PTL series, such as: Update README.md 32ece2d681b26731bad50902587b988d6a79e43e updated README.md 3e868f13c4dc33c20ca33a0cc8f51c9d63e1c081 updated C14 footprint, traces, groundplane updated C14 footprint, traces, groundplane master PSU/Synth Mages Power Word Stun.kicad_prl Synth Mages Power Word Stun Panel.kicad_pcb | 1070 Synth Mages Power Word Stun.kicad_pcb 23180 lines From 09fb252cd2b579a75d1265ef59f35164b84754cc Mon Sep 17 00:00:00 2001 Subject: [PATCH] Update current state of project. Add cascading input and output jacks input_column = h_margin; col_right = width_mm - hole_dist_side, hole_dist_top); echo("Putting a hole with radius: ", hole_r , " at ", width_mm - h_margin; input_column = h_margin; working_height = height - v_margin - title_font; saw_out = [output_column, bottom_row, 0]; pwm_duty = [second_col, third_row, 0]; fm_in = [h_margin+working_width/8, row_3, 0]; c_tune = [second_col, second_row, 0]; //Third row interface placement f_tune = [h_margin+working_width/8, row_2, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune = [width_mm/2 - h_margin, top_row, 0]; f_tune = [second_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_4, 0]; pwm_cv_lvl = [second_col, second_row, 0]; //Third row interface placement triangle_out = [width_mm-h_margin-working_width/4, row_1, 0]; square_out = [output_column, row_2, 0]; pwm_in = [input_column - h_margin/2, row_1, 0]; f_tune = [second_col, first_row, 0]; sync_in = [first_col, third_row, 0]; fm_in = [first_col, first_row, 0]; c_tune = [second_col, second_row, 0]; //Third row interface placement triangle_out = [output_column, bottom_row, 0]; fm_in = [first_col, fourth_row, 0]; pwm_in = [first_col, fifth_row, 0]; //left_rib_x = thickness * 1.2; right_rib_x = width_mm - hole_dist_side - thickness; // draw panel, subtract holes union() { cube([board_width, board_height, thickness]); cylinder(thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cube([cutout_width, cutout_height, thickness+3]); cylinder(h=thickness+standoff_height+3, r=hole_radius, $fn=360); vertex 0 -8.99167 3 vertex 6.35807 6.35807 3 vertex -7.48323 -5.00013 4.51216 facet normal 5.032445e-001 -8.627504e-001.

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